Based on this sentence: the term “underground injection” excludes the underground injection of fluids or propping agents (other than diesel fuels) pursuant to Hydraulic Fracturing operations related to oil, gas, or geothermal production activities.
Based on the sentence above I have several questions:
1. What exactly does the phrase in parentheses “(other than diesel fuels)” modify?

a. Does “(other than diesel fuels)” only refer / modify the meaning of propping agents?

b. Does “(other than diesel fuels”) also effect / modify the meaning of “fluids”?

c. Does the placement of an “or” between “fluids” and “propping agents” not prevent the phrase “(other than diesel fuels)” from modifying the meaning of fluids? If this is not the case, why? If it is, why?

d. By using the plural of “fuels” instead merely “fuel” doesn’t the meaning of “fuels” mean some combination of diesel fuel? Or does the pluralization of “fuels” simply mean any variety of fuel that constitutes diesel?

asked Jul 31 '13 at 20:43 jason spiritas New member

1 answer


The sentence in question is a very messy sentence. It is attempting to define a term by saying it excludes this, except not excluding that. Since I don't have knowledge of propping agents or underground injection, I have no idea if diesel fuels are only propping agents or also fluids. Only a reader with a clear understanding of the topic would know. If this is written for readers in that industry, then the sentence can make more sense, If not, it really should be rewritten for clarity. By making fuel plural, it means there is more than one type of diesel fuel.

link comment answered Aug 01 '13 at 15:24 Patty T Grammarly Fellow

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